Process for repairing water pipes



June 8,1926;

v INVENToR. JEM. of (.1 :nu

A TTORNE Y.

Patented .lune 5, i926.

THOMAS DE LA MARE, OF TOELE, UTAH.

PROCESS FOR REPAIRNG 'WATER PEPES.

Application filed June 11,

My invention relates to conduits or pipes and has 'for its object to provide a process whereby a pipe may be repaired and preserved whilein use and carrying liquid under a iiow pressure.

rlhese objects l accomplish with my process which may be carried out with the apparatus illustrated in the accompanying drawings, in which l have shown the method orp preserving and repairing pipe while in use, and the best apparatus for carrying out the required steps.

In the drawings similar letters and nu merals Vot reference indicate like parts throughout the several views, and the speciiication describes the apparatus and my process for carrying` out the invention otl preserving and repairing pressure pipe by surrounding said pipe, while it carrying water or other liquids, with a continuous sleeve ot concrete. Figure l is a diametrical sect-ion oit a water pipe with my appa-- ratus in place thereon, Figure 2 is a side view oit the upper repair section. Figure 3 is a similar view of the lower repair' section. Figure si is an end elevation o the upper repair section, and Figure 5 is an end elevation ot the lower repair section.

lt is frequently desirable to repair a short section or portion of a pipe, and to preserve the other portions of the saine pipe, while the pipe is in use and carrying water and other liquids Atherein under pressure, such as that required to cause the iiow oit' the liquid. infrequently this pressure will be as much as one hundred pounds or more to the square inch. ils is well known, water pipes made ot wood may rot, and metal pipes may corrode or deteriorate, for only a short distance or length, while other port-ions have not detei-loi. and also that to surround said pipe with a plastic concrete while the pipe is carrying a flow ot water, with the purpose ot patching the leaking pipe with concrete,

dii'iicult.

l-eretotore such repairs have been expensive, the use ot material., which would not be displaced while sealing the leair, made the use of concrete in a plastic state impossible for the reason that the tlow et water through the leak would wash the plastic concrete away before it had time to set, together with any preservative that may have been applied tothe pipe which has not decayed.

By the use of my process, the pipe is to be exposed and the parts which have decayed L .ted

1924s. Serial No. 719,444.

oi )lastic cement A around the pipe on both sides of the leak, before in any way trying to stop the flow of water within the pipe or out through the leak. rlhen place on the under side oi the pipe a thin metal sheet l) conforming with the size and contour of the pipe, and covering more than one-halt` of the circumference of the pipe, extending continuously from one ot said cement band patches A to the other. l then apply another curved thin metal sheet B of the same length, but not as wide as sheet D around and contiguous the upper side of said pipe. The said metal sheet B has an opening` therein large enough to allow the leakage water to pass freely through and away, which opening in the wall ot said metal sheet B is reinforced by a threaded disk or plate C which has previously been sealed or soldered on said metal sheet Bl l then spread a strip ot the plastic cement F along the horizontal andinner edges ot said metal sheet B, which strip l" will be contiguous the outer face of said sheet D when thel sheets B and D are bound on the pipe by the strand otl wire 1, thereby completing a thin dam or strip around the leak contiguous t-he edges of said strip B. This tightening of the said metal sheets will. direct all leakage water through said reinforcement plate (l and through a threaded nipple 2,V

treated with creosote. l then apply a band which is to be screwed into said plate C, V

and an elbow on said nipple with another cement pipe 5 therein. Other bands of plastic cement E are then applied around said pipe, each spaced from the said bands A, and l then surround said pipe with an even layer of plastic concrete e oi the desired thickness and extending 'from near the iniddle or" one oi' said bands E to the other. N hen this concrete has lully set, so that it will withstand the leakage, the said elbow and pipe 5 maybe removed from the said nipple 2 and the opening closed by a threaded plug screwed therein, or a cap on said nipple, thereby permanently stopping the 'flow oi leakage water from the pipe. The covering ot the pipe with the concrete will prevent further deterioration of the pipe, and by repeating the process and thus covering all or any desired portions of the pipe the entire line ot pipe may be preserved and repaired without interrupting its use and the flow of water therethrough.

Having thus described my invention and lll its operation I desire ton secure by Letters Patent and elai1n:- A t l. A process for repairing and preserving pressure pipe While it is in use for carrying liquids, which consists of cleaning the eX- teror surface of said pipe and applying creosote to the defective portions of the pipe; surrounding said defective parts with a pate-h of plastic cement; covering said patch and all portions oic said pipe, which are Within the area et said patch, with a thin sheet of watertight materiali, which sheet has an opening therein toalloaY all leakage water to How through said opening; then binding sain sheet tightly around said pipe to direct and i'ioree all leakage Water through said opening; then surrounding a section of said pipe, adjacent to the sai-d sheet and extending Vin both directions beyond the' ends of said sheet, by a layer ot' plastic concrete, and when said concrete set plugging the saidv leakage opening.

` 2. A process tor repairing and preserving pipe While' it is in use for carrying liquids, which consists of cleaning thev exterior surface of said' pipe and applying oreosote to the defective portions of the pipe; surrounding4 said defective parts With a patch of plastic cement; eoyering said patch and all portions of said pipe which are Within the area of said patch *ith a thin sheet of watertight material, which sheet has an opening' therein tof allow all leakage Water to flow through said opening; then binding said sheet tightly around said pipe to direct and torce alli ylc-lalnige Water through said opening placing' other bands Vo: ce'- n'ient around and' on said pipe, which bands are spaced from the ends of said patch, and

then surrounding a section ot' said pipe, on which' are held the said patch and cement bands, with a layer of plastic concrete While the leakage Water is allowed tol flow freely through said opening, and when said. conciete is set plugging the said leakage open- Aing.

In testimony whereof I haveA affixed my signature. Y f

THOMAS Le Mann. 

